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why EJB?

 
Ranch Hand
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hi folks,
i am just starting to learn EJB and trying to figure out why EJB is required. it would be a great help if someone could explain me the TYPICAL situation that only need EJB to solve the problem. please give me some pointers to EJB literature too.
thanks.
 
Greenhorn
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EJB is a serverside component architecture that simplifies the process of building enterprise-class distributed componant application in Java. By using EJB u can write scalable,reliable, and secure applications without writing ur own complex distributed component framework.
some examples where we can use EJBs are:
1. Stock trading system
2. Banking System
3. Customer call center
Where u can think of distributed working environment.
for the best start use following mastering ejb by ED Roman this one free PDF e-book. also this url contains some good articles related to EJB and its design pattern
http://www2.theserverside.com/books/masteringEJB/index.jsp
 
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Check out This article for a short list of "when you want to use EJB's..."
Kyle
 
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